Paint or varnish and method of making the same



UNITED STATES PATENT orrlca.

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.PAIDI'I. OR VARNISH METHOD OF MAKING THE SAME.

' Specification of Letters Patent.

Patented Mar. 1, 1921.

No Drawing. Original application filed January 18, 1919, Serial No. 271,900. Divided and this application filed May 10, 1919. Serial No. 296,051.

To all whom it may concern. 7

Be it known that I, MARC DARRIN, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Paints or Varnishes and Methods of Making the Same v coke ovens are passed through a tower, where the benzol hydrocarbons are absorbed in heavy petroleum oil. This petroleum oil is then taken ofl? and distilled to obtain hydrocarbons in the form of an oil, techmcally known as light oil This light oil is then distilled to obtain the benzol content and other constitutents, such as toluol and solvent naphtha. This distillation of the light oil produces residues from which valuable resins are recoverable. I refer particularly to resins produced in, the manner described in the patent of F. W. Sperr, J r., and myself, No. 1,263,813, and the resins produced by a process, such as described inmy Patent No. 1,236,917.

I have discovered that a paint or varnish possessing extraordinarily good chemical and electrical resisting properties can bemade fromresins of this character by combmmg them with certain oils which have found most suitable for this purpose. The

oils which I have found most suitable for this purpose *are known commercially as China wood oil, linseed oil, soy bean oil,

oppy seed oil perilla oil, corn oil, etc.

hese oils may be employed either in a raw condition or after boiling or other treatment. 'lhey may also be previously rendered heavy boiled by oxidation or otherwise.

As an example, a preferred method of preparing my new product consists inheatmg a quantity of the above described resins with one or moreof the oils above mentioned to a temperature of approximately 350 degrees E, if the oil has already been previ-' ously boiled. If the oil has not been pre-. VlOllSl boiled, it is preferable to heat the material up to from 450 to 570 degrees F., 1n a manner to effect a proper thickening and combination of the materlals. In such case, 1t is also advisable to add ordinary driers, such as litharge, prior to or during the cookmg process. The chargeshould be maintained at the above temperature or thereabout until the material becomes as viscous as possible, without danger of its gelatinizing or darkening. Of course, the oils and resins may be melted and cooked separately,

being combined later at the lower temperature mentioned.

After the above described treatment is in said Patent 1,236,813, 250 parts by weight;

Linseed oil, 650 parts by weight; Litharge, 20 parts by weight; Turpentine, 1500 parts by weight. These proportions, however, may be ver greatl varied and I do not desire to limit mysel in any way to them, it bein'g possible to roduce varnishes for-diiferent purposes under a considerable variation in these proportions. v v

The lineseed oil may be either bo1led or raw linseed oil or some of the specially prepared grades which can be found on the market, and which can not be classified as either boiled or raw oil.

Varnishes or aints made in this manner or containing t e described materials as a part of their general compositions are very tough and hard. The dried films resulting tion, except that of the very strongest mineral acids, such as nitric acid. Strong al-" kalis have practically no efiect on the surfaces coated with this composition. In fact,

it is comparable in its inertness to paraflins, being neither acidic or basic in its pro rties.

Such paint or varnish is very suita 1e for the addition of delicate colorings, dyes, pigments, etc., because of its chemical inertness, which in no way effects or modifies the most delicate shades;

I do not limit myself to the production of the product in the manner described.

The present a plication is a division of my pending app ication Serial No. 271,900, filed January 18, 1919.

I claim:

1. A paint-or varnish comprising a resin obtained from solvent naphtha subjected to an autoclave process and linseed oil.

2. A paint or varnish comprising a heat polymerized resin obtained from solvent naphtha combined with linseed oil and a 20 volatile solvent.

3. A process of manufacturing paints and varnishes which comprises mixing a resin obtained from solvent naphtha with linseed oil and subsequently heating the mixture to 25 about 450 to 570 degrees Fahrenheit, substantially as described.

In testimony whereof, I have hereunto set In hand.

y MARC DARRIN. 

